V-93241 Replace variable usage with strings

[karikarshivani]

A new approach from V-73509 from Windows Server 2016 can be followed for V-93241

[karikarshivani]

Thanks @rlakey for pointing this out! I'll leave this issue open to remove the variables and just replace them with the string inside the describe block:

it { should have_property '\\\\*\\NETLOGON' }
it { should have_property '\\\\*\\SYSVOL' }